These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
With his momentum building, Yeltsin began calling for Gorbachevâs resignation. He also submitted himself to elections for the Russian presidency, winning 59 percent of the vote in June 1991, compared to just 18 percent for his closest competitor.